tkinter: progress list not updating
You should use the update() method on your window. Normally tkinter updates the window in mainloop(). It re-draws the window content very fast (many, many times per second). When you now call f_run() the mainloop() is interrupted until the function is completed. Everywhere you want to re-draw the window content, type root.update() into the code. For example:
for i in range(len(fl_names)): Xfunct(i) root.update() prog_list...Or you should use
update_idletasks()As described in the comment(s)